/*
 * Copyright 2018 dc-square GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package com.hivemq.extensions.rbac.listener;

import com.hivemq.extensions.rbac.utils.CredentialsValidator;
import com.hivemq.extension.sdk.api.annotations.NotNull;
import com.hivemq.extension.sdk.api.annotations.Nullable;
import com.hivemq.extension.sdk.api.auth.Authenticator;
import com.hivemq.extension.sdk.api.auth.parameter.AuthenticatorProviderInput;
import com.hivemq.extension.sdk.api.services.auth.provider.AuthenticatorProvider;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 文件身份验证提供者
 * @author MI
 */
public class FileAuthenticatorProvider implements AuthenticatorProvider {

    private static final @NotNull Logger log = LoggerFactory.getLogger(FileAuthenticatorProvider.class);

    private final @NotNull FileAuthAuthenticator authenticator;

    public FileAuthenticatorProvider(@NotNull final CredentialsValidator credentialsValidator) {
        this.authenticator = new FileAuthAuthenticator(credentialsValidator);
    }

    @Override
    public @Nullable Authenticator getAuthenticator(@NotNull final AuthenticatorProviderInput authenticatorProviderInput) {
        // 始终返回相同的身份验证器，因为它是线程安全的，并且可以在多个客户端之间共享
        return authenticator;
    }

}
